Ophthalmic mounting



July 16, 1929. G. c. FAVRE 1.72L

OPHTHALMIC MOUNTING Filed Jan. 22, 1926 2 Sheets-Sheet 1 111/1/11,1/11/12 y/lllllllllllll i I/l/l/l/ll/l A a v o July 16, 1929. c. FAVRE1,721,181

OPHTHALMI C MOUNT ING Filed Jan. 22, 1926 2 Sheets-Sheet 2 gmento'aGeorge CFavve. I

Patented July 16, 1929.

" tram r if I rizi i OPTICAL COMPANY, OF SOUTHBBIDGE, MASSACHUSETTS, AVOLUNTARY ASSOCIA- TION OF MASSACHUSETTS. g

OPHTHALMIC MOUNTING.

Application filed January 22, 1928. Serial No. 83,063.

This invention relates to ophthalmic mountings and has particularreference to an improved'process for makingthe same.

The principal object of the invention, is to provide improved means formaking a composition ophthalmic frame including rims and bridge from asingle piece of stock.

Another object of the invention, is to provide improved means for makinganophthalmic frame from a composition material such as celluloid,combined with metallic parts wherein the composition part is of a singlepiece of material with portions thereof reinforced by metal.

Another object of the invention, is to provide means for making the rimsand bridge members of an ophthalmic mounting from a single tubularmember.

Another object of the invention, is to provide economical means formaking a composition ophthalmic mounting.

Another object is to provide simple and efficient endpiece connectionsfor an-ophthalmic mounting of this description.

Other objects and advantages of my improved construction should bereadily apparent by reference to the following specification taken inconnection with the accompanying drawings, in which similar charactersdesignate similar parts throughout, the preferred form of the inventiononly having been shown and described by way of illustration. I

Referring to the drawings:

Figure 1 is a rear elevation of an ophthalmic mounting embodying theinvention.

Figure 2 is a perspective view showing a composition tubular member usedin the invention. 7

Figure 3 is a perspective view showing a step in the process ofmanufacture, a

Figure 4 shows another step in the process of manufacture. v i 1 Figure5 shows a further step in the process of manufacture.

Figure 6 shows a still further step in the process of manufacture;

Figure 7 shows a still further step in the process of manufacture. V

Figure .8 is a detailed perspective view partly shown in section of theendpiece construction usedin the invention. it

Figure 9 is a fragmentary sectional view of a' modification.

Figure 10 is a view showing a further modification. V V

c Figure 11 is a view showing a still further modification. I

Prior to this invention, ophthalmic frames were formed by eitherblanking the fronts from sheet composition such as celluloid or byforming them over metal rims. In the blanking process 75 per-cent of thesheet stock went to waste. This composition sheet stock is very costly,so it is readily seen that with this amount of Waste and the operations,

through which the fronts have to be carried that the frames areanexpensive article to manufacture, and great care has to be taken infinishing the frames to the size and shape desired. Another greatdifficulty in the prior art is'that due to the facial characteristics ofindividuals varying in width of nose, pupillary distance, overhang ofeyebrows, etc, it has been necessary to provide-various sizes offramesand shapes of bridges to meet the dealers demand. In order to meetthis demand an individualblanking die has to be provided for each shapeand size required,-

thereby causing the manufacturer to'provide a great number of blankingdies that are .verycostly and which have to be replaced very often dueto the effectof the composition on the cutting edge of the dies. Thisalso adds greatly to the expense in making-frames of this character withthe result that they have been a very costly article to place on themarket when finished.

In formingv frames over inetal, the composition has tobe grooved,curled, notched and fitted at the bridge connection and positioned overthe metal frames after which rivet pins or the like are used to hold therims in place. This makes a long and expensive process of manufacture.

In this invention thisloss of stock, cost of blanking dies, grooving,etc., is obviated and the process of manufacture is simplified so asMounted within a suitable I v bridge member 13 1s a reinforcing member14.

fixed distance apart and in accurate position on the face of the wearer.I

recess 1n the Mounted on one end of the lens rims 10 by the rivet pinsor the like is a plate member 16 having mounted thereon a 're cessed lug17. A second plate member 13 is mounted on the opposite ends of the lensrims 10 by the rivet pins or the like 19 and also has mounted thereon arecessed lug member 20.

Positioned on'the outer end of the plate member 18 is a hinge member 21adapted'to receive a second hinge member 22 carried by the temples 12.These plate members having the recessed lugs, are adapted to be alignedand fitted together to form the endpiecemembers 11.

A screw 23 is inserted in the recessed lug 17 and is then threaded intothe second lug to clamp the lens rims or frames 10 around a lens.

A second screw 24 mounted in the hinge member 21 serves as a pivot pinfor the hinge member 22 and also as a temple retaining dowel;

It will'be apparent that with the endpiece construction described thattemples may be interchanged without disturbing the lenses and on theother hand, the lenses may be removed without disturbing the temples.

In forming ophthalmic mountings of the character described I preferablymake use of a piece of tubular stock 25 in which I saw orblank the slots26 having the offset cuts 27. By so doing I form the arms 28 and 29respectively, which I spread outwardly as illustrated in Figure 4.WVhile the arms 2.8 and 29 are in their outward positions I bend theends 30 and 31 as illustrated in Figure 5. I next insert the metallicreinforcing member 14 in the recess 32 of the center portion 33. Thiscenter portion 33 is then bent to form the bridge member 13 as shown inFigure 6. Following this operation I form the eyes or lens rims 10 bybending as illustrated in Figure 7, after which the plate members 16 and18 are mounted in place to form the end pieces 11.

It will be apparent that by splitting a tubular member in this way thesplit recessed portion will form a groove 34 in which the lens is held,thereby eliminating the necessity of a grooving operation as would bethe case if a piece of composition bar stock were used instead of thetubular member.

I do not wish to limit my process to the use of tubular stock however asthe same result may be obtained by the use of bar stock as stated above.

Referring to Figure 9 I show a modification in which I produce acomposition frame having a reinforcing metal frame 35. This metal frameis formed by inserting a tubular metal core 36 within the tubularcomposition member 25 and sawing or slotting the same as heretoforestated for the composition tube. Following the slottin o eration it isformed tion member 25.

In this'case the split recessed portion 37 of the tubular metal coreforms-the slot orv groove to receive the lens and also forms acontinuous reinforcing bridge member 38 in the same manner as thetubular composi- In Figure 10 I show a further modification in which theends of the lens rims 10 are cemented together as at 39 and a separatetemple receiving portion 40 having mounted thereon the hinge member 41,is

fitted and cemented to the outer periphery of the lens rims 10 as at 42.This forms a solid composition frame.

In Figure 11 I show a still further modification similar to Figure 9 inwhich I provide From the above it will be readily appre -V ciated thatthere has been provided a structure which will accomplish all of theobjects and perform all the functions set forth. It

is also to be understood that various modifi-v cations may be founddesirable in the cona split endpiece 43 having themembers 44 structionand arrangement of parts, and the right is hereby reserved to make suchchanges as properly fall within the scope of the appended claims withoutdeparting from or exceeding the spirit of the invention.

Having described my invention I claim 1. In a device of the characterdescribed, lens rims having offset abutting endpieces,

' a plate on one endpiece having a projecting lug, a plate on the otherendpiece having a projecting lug and a hinge connection, said projectinglug being aligned with the lug on the first endpiece, means for securingthe two lugs together, and a temple having a hinge connection adapted toengage With the hinge connection on the plate on the second endpiece.

2. In a device of the character described, lens rims having offsetabutting end pieces, one end piece fitting into a recess in the otherend piece, a plate on the inset end piece having a projecting lug, aplate on the other end piece having a projecting lug and a hingeconnection, said projecting lug being aligned With the lug on the firstend piece, means for securing the two lugs together, and a temple havinga hinge connection adapted to engage with the hinge connection on thesecond end piece.

GEORGE C. FAVRE.

